IV

from WordNet (r) 3.0 (2006)

iv
    adj 1: being one more than three [syn: {four}, {4}, {iv}]
    n 1: the cardinal number that is the sum of three and one [syn:
         {four}, {4}, {IV}, {tetrad}, {quatern}, {quaternion},
         {quaternary}, {quaternity}, {quartet}, {quadruplet},
         {foursome}, {Little Joe}]
    2: administration of nutrients through a vein [syn: {intravenous
       feeding}, {IV}]

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

IV
       Initialisation Vector (cryptography)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

IV
       InformationsVerarbeitung